Methods Deter mine the relation of two random variables with entropy method.Analyze the corre lation coefficient between every pair of Chinese herbs in the prescription of st roke database.

• 方法:用熵定义两个随机变量之间的关联度,以此分析中风病方剂数据库中每两味中药之间的关联系数,定量描述它们之间的关联度。